Simple line drilling ring cutter to take original sample device

Abstract

The invention discloses a device for taking the original sample of a simple line drilling ring cutter, which includes a bundle-joint open ring cutter soil fetcher, a pressurized lifting booster used in conjunction with the bundle-joint open ring cutter soil fetcher, and a ring cutter soil Sample preservation device; the bundle joint type open-mouth ring knife soil fetcher includes a fixed half-closed sampling tube, and a closed cone is installed at one end of the fixed half-closed sample tube, and a closed cone with a Fix the through hole connected with the semi-combined sampling tube, and place a ball valve in the through hole, set a hollow drill rod connected to it at the end of the closed cone, and set a vent hole on the closed cone; The pressure-lifting power device is installed on the hollow drill pipe.

Description

technical field [0001] The invention relates to the determination of a simple ring-cutter earth-taking device for a line, and belongs to the field of civil engineering. Background technique [0002] At present, the road survey mainly adopts drilling rigs to take samples, and the undisturbed samples and disturbed samples can be taken. In the route survey, considering the depth of subgrade influence, the convenience of construction and equipment handling, and economical factors, sampling is mainly carried out by manual Luoyang shovel or twist (spiral) drill, and only disturbed samples of grades III to IV can be taken for soil classification. , but the water content, density, consolidation and strength tests cannot be carried out. [0003] According to the "Code for Geological Survey of Highway Engineering" (JTJC20-2011), "Code for Geotechnical Engineering Survey" (revised in 2009) GB50021-2001, it is appropriate to use the rapid static continuous pressing method for soil samp...

AI Technical Summary

Problems solved by technology

In the route survey, considering the depth of subgrade influence, the convenience of construction and equipment handling, and economical factors, sampling is mainly carried out by manual Luoyang shovel or twist (spiral) drill, and only disturbed samples of grades III to IV can be taken for soil classification. , but the water content, density, consolidation and strength tests cannot be carried out

[0003] According to the "Code for Geological Survey of Highway Engineering" (JTJC20-2011), "Code for Geotechnical Engineering Survey" (revised in 2009) GB50021-2001, it is appropriate to use the rapid static continuous pressing method for soil samples, while the current Luoyang shovel, twist drill Neither can be realized. The ring knife can take the original sample on site, but it is only limited to the surface layer. The main reasons are three points: (1) How to add the arm of the ring knife to increase the depth of the soil, and the ring knife head to ensure the original soil; (2) the ring knife The preparation and fixation of the knife soil taker ensure that the soil sample can enter the ring knife; (3) the power-assisted method when going down to ensure that the sampler is pressed down and lifted up; (4) the transportation and storage of the ring knife sampling is also a problem, The ring knife is round, how to ensure that the sample is sealed, the direction of the sample is consistent with the original position, prevent the change of moisture content, strictly prevent exposure or freezing, and avoid vibration during transportation to ensure the quality of the original sample

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